Catamaran Survey Vessel Delivered to Global Geophysical Services

Wednesday, April 25, 2007
The 140 ft. catamaran seismic survey vessel Ms. Cordelia was delivered to Global Geophysical Services, Houston, TX. The all aluminum vessel was converted from a prototype high speed low wake passenger ferry that had not been completed or put in service. The conversion design and engineering was done by the naval architectural firm of Guarino & Cox, LLC, Covington, LA. Seacraft Shipyard carried out the conversion work at their facilities in Amelia, LA.

The unfinished vessel was considered an ideal candidate to be converted for its intended use primarily due to the large deck area available and its shallow draft. The MS. CORDELIA will be capable of performing inshore shallow water seismic survey work laying and retrieving cables in as little as 6 feet of water.

The slender catamaran demi-hulls make the vessel extremely fuel efficient at a continuous cruising speed of 12 knots and comfortable in the short steep waves often found in inshore locations. The major modification to the hull form was the removal of the large water jets originally installed and altering the stern lines to utilize conventional propellers in shallow tunnels. A continuous maximum speed of 15 knots is obtained through this arrangement with power provided by two new 700shp Lugger diesel main engines engines.

An operating speed of 2 to 3 knots was a requirement during deployment and retrieval of the special cables used while surveying. This would normally be impossible to achieve with the easily driven catamaran form but the naval architects of Guarino & Cox devised a scheme using oversized independent rudders capable of being splayed outboard up to 60 degrees that deflect the propeller wash and act as water brakes.

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter May 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

LNG

Tech & Design Solutions for Modern Workboats

EPA Tier 4 regulations (for engines of 804 hp and higher) and propulsion advancements have many manufacturers and vessel designers changing course to adapt to new requirements and customer demands.

EGAS: Egypt to tender for 10 LNG Cargoes

Egypt will tender next week to import 10 cargoes of liquefied natural gas (LNG) for delivery in July and August, an official from the state gas company, EGAS, said on Thursday.

Cheniere to Roll Out Second LNG Unit

Cheniere Energy Inc. plans to start exporting liquefied natural gas in August from a second plant at its Sabine Pass terminal in Cameron Parish, according to a report from Bloomberg News.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Navigation Offshore Oil Pod Propulsion Port Authority Salvage Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0653 sec (15 req/sec)